Applying the 5% level of importance was there a significant change in cholesterol level?
Four individuals with high levels of cholesterol went on a special crash diet avoiding high cholesterol foods as well as taking special supplements. Their total cholesterol levels earlier and after the diet were as follows-
|
participant
|
before
|
after
|
|
J.K.
|
287
|
255
|
|
L.M.M.
|
305
|
269
|
|
A.K.
|
243
|
245
|
|
R.O.S.
|
309
|
247
|
Using the 5% level of importance, was there a significant change in cholesterol level?
Explain your answer to someone who has never taken a course in statistics.